Day 390: MHT-CET Physics

1. A.
   A
2. B.
   B
3. C.
   C
4. D.
   D

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1. A.
   $1500\,d$
2. B.
   $\frac{373}{273} \times 1500\,d$
3. C.
   $\frac{273}{373} \times 1500\,d$
4. D.
   $\sqrt{\frac{373}{273}} \times 1500\,d$

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1. A.
   $\frac{mgr}{\sqrt{L^2 - r^2}}$
2. B.
   $\frac{mgr}{L^2 - r^2}$
3. C.
   $\frac{\sqrt{L^2 - r^2}}{mgL}$
4. D.
   $\frac{mgL}{\sqrt{L^2 - r^2}}$

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1. A.
   $q(\vec{V} \times \vec{B})$
2. B.
   $q(\vec{B} \times \vec{V})$
3. C.
   $q(\vec{E} \times \vec{V})$
4. D.
   $q\vec{E} + q(\vec{V} \times \vec{B})$

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1. A.
   decreases
2. B.
   increases
3. C.
   remains unchanged
4. D.
   first increases and then decreases

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